SU1391785A1 - Arrangement for separating sheets from a stack and feeding them to the working machine - Google Patents

Abstract

The invention relates to the processing of metals by pressure, in particular to the automation of sheet metal forming and can be used to separate sheets from the foot and feed them into the working area of the press. The goal is to increase the reliability and performance of the device. The device comprises a lifting table 2 mounted on the housing 1 with vertical uprights 3. A stack of sheets 26 is mounted on the table. Traverse 16 has actuators 17, 18, 19 of movement of grippers 20, 21, 22. Additional grippers are located at intermediate positions for separating adhered sheets and are provided with sheet presence sensors. One of the rollers of the mechanism 13 is installed with the possibility of vertical movement and is equipped with sensors 14 and 15. The supply of the grips of the traverse by driving them in a vertical plane, and the traverse by the drive of rotating in the horizontal plane allows the sheet grippers to be separated from the foot by bending the edge of the sheet sheet and its movement in the horizontal plane to the roller mechanism. Placing additional grippers at an angle to the longitudinal axis of the foot of sheets prevents the sheets from the foot from accidentally getting onto these grips and their sensors. 2 Il. h g (L so; o o ate

Description

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The invention relates to the processing of metals by pressure, in particular, to means of automated sheet punching, and can be used to separate sheets from the foot and to feed a press or other processing equipment into the working area.

The purpose of the invention is to improve the reliability and performance of the device with,

FIG. 1 shows schematically the proposed device, view j in FIG. 2 - the same, view A in FIG. 1.

The device for separating sheets from the foot and supplying to the processing machine comprises a housing 1 on which a lifting table 2 is located, which serves to lift the foot of leaves, vertical supports 3, which play the role of foot stoppers and are equipped with sensor A for the position of the upper sheet of the foot, additional grippers 5,6 7 and 8, located at intermediate positions for separating sheet slip and equipped with sensors 9, 10, 11 and 12 of the presence of sheets, the roll mechanism 13, as one of the rolls of which is installed with the possibility of vertical transfer Premises for supplying the separated sheets to the processing machine, while the roller mechanism 13 is provided with sensors 14 and 15 for the presence of sheets.

The traverse 16 is equipped with actuators 17, 18 and 19 for moving the grippers 20, 21 and 22. The rotation mechanism of the traverse located in the actuator 17 provides for the reciprocating movement of these grippers in the vertical and rotary in the horizontal planes, and the actuators 18 that are hinged on the traverse and 19 — moving in vertical and reciprocating in the horizontal planes.

Sensors 23, 24 and 25, mounted on grippers 20, 21, 22, serve to determine the number of adhering sheets.

The lift table 2 has a stack of 26 sheets installed.

The device works as follows.

A stack of 26 sheets is mounted on a hoist} table 2 A system (not shown) for controlling the device is turned on. Drive 17 lowers traverse

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16 with a gripper 20.21 and 22 on the top sheet of the foot 26. Sensors 23.24 and 25 give actuators 18.19 to trigger, and the grippers 20.21 separate the sheet from foot 26, bending its ends. Sensors 23,24 determine the number of detached gx from the foot of the sheets.

If one sheet is separated from the foot 26, then the actuator 17 receives a command to rotate the separated sheet to the working position and to lift the sheet to the feed level with its roller mechanism 13. At the same time, the vertical supports 3 hold the remaining 26 sheets in the foot from turning along with the separated sheet. Drives 18 and 19, after turning to the working position, move the grippers 20.21 to the horizontal position. The separation sheet is rectified. The sensor 14 gives the command for the horizontal movement of the sheet by the drives 18.19 of the grippers 20.21 between the rollers of the roller mechanism 13. The sensor 15 gives the command to feed the sheet. One of the rolls of the roller mechanism 13 presses the sheet against the other roll, the sheet is fed to the processing machine. The actuator 17 rotates the transducer 16 to its original position, and the cycle of sheet separation from the foot and feed to the processing machine is not repeated.

If two or Tpii sheets are separated from the foot 26, then the actuator 17 receives a command to rotate from sensors 23,24

separated sheets in an intermediate position, the grippers 20,21 lower, as described, the folded ends of the sheets on the additional grippers 5 and 6, which capture the lower of the separated sheets. Sensors 9 and 10 give a signal for gripping the sheet and a command to bend the remaining 20.21 and 22 sheets on the grippers. The sensors 23 and 24 again determine the number of these sheets.

If two sheets remain on the grippers 20.21, the sensors 23 and 24 instruct the actuator 17 to turn to the second intermediate position. The grippers 20 and 2) lower the ends of the sheets onto the additional grippers 7 and 8, which grip the bottom sheet. The sensors 11 and 12 give a signal about the capture of the sheet and the command to bend the ends of the remaining upper sheet. At the same time, the second lower-1 NII sheet remains on the additional grippers 7 and 8. The sensors 23 and 24 determine the 1 quantity of the remaining 20,21 and 22 sheets on Baxjinrax. If on

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these grips remained one sheet, then it turns to the working position and is fed by the roller mechanism 13 to the processing machine in the sequence indicated above.

If after the submission of this sheet on the additional grippers 5,6 and 7, 8 sheets are left, they are fed into the working position in the reverse sequence: first, the sheet on the additional grippers 7.8 is fed, and then the sheet on the grabs 5.6.

After this, the yoke 16 returns to the initial position above the foot 26, and the cycle of separation and feeding of individual sheets to the processing machine repeats.

The constant level of the top sheet in the foot is maintained due to the fact that when the height of the foot decreases, as the sheets are fed to the processing machine, sensor 4 is triggered, which gives the command to activate the table lifting drive 2 with the sheet of sheets installed on it.

Since no more than three sheets stick together in the practice of separating sheets from the foot, two intermediate

POSITION OF DIVISION If necessary, the number of intermediate positions can be increased by introducing new pairs of additional grippers.

Claims (1)

Invention Formula A device for separating sheets from the foot and feeding to a processing machine, comprising a table mounted on a bed with vertical posts, equipped with a lifting drive, a yoke with grippers, mounted above the foot with the possibility of reciprocating motion in horizontal and vertical planes, plate position sensors , grippers installed with the possibility of interaction with the bottom surface of the sheet being cut off, the roller feed mechanism, characterized in that, in order to increase reliability and production The traverse is installed with the possibility of rotation in the horizontal plane, at least two extreme grippers at the traverse are installed with the possibility of rotation in the vertical plane, and the additional grippers are installed at an angle to the longitudinal axis of the foot of the sheets. // fig 2 one/ / J 2 / Editor V.Kovtun Compiled by T.Ivanova Tehred L. Serdyukova Order 1846/14  709 VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Proofreader M. Demchik Subscription